Preparation of 5-t-butyl alkyl-substituted phenols
US4236031A · kind A · utility
2Cited by
2References
9Claims
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Inventor
Key dates
| Filing date | Jul 5, 1979 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Jul 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing 5-t-butyl alkylphenols from alkylphenols in high selectivity is disclosed, wherein the starting alkylphenol is a 3-alkylphenol or a 2,3-dialkylphenol and the alkyl group is a C.sub.1 -C.sub.6 primary alkyl. The process comprises reacting a 3-alkylphenol or a 2,3-dialkylphenol, wherein the alkyl group is a C.sub.1 -C.sub.6 primary alkyl, with isobutylene in the presence of a catalyst, which is a sulfonated polystyrene crosslinked with divinylbenzene, at a temperature of at least 100.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.